Shank of a screw driver bit



FIG. 1 is a perspective view of a shank of a screw driver bit showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plain view thereof;

FIG. 7 is a bottom plain view thereof; and,

FIG. 8 is a view showing the application thereof, wherein the broken line portion is for illustrative purpose only and forms no part of the claimed design. 

The ornamental design for a shank of a screw driver bit, as shown and described. 